Sash pulley



July 26,-193'2. F. J. PEASE AL 1,868,761

SSH PULLEY Filed oct. so, 1930 TIE E.

Patented July 26, 1932 UNITED STATES PATENT, oFFlcE FREDERICK J'. PEASE ANI) HARLOW H. PEASE, OF WAUWAVTO'SA, WISCONSIN, ASSIGNORS T0 CLUlVI MANUFACTURING COMPANY, 0F MILWAUKEE, WISCONSIN, A CORPORA- V TION 0F WISCONSIN SASH PULLEY Application led October 30, 1930. Serial No. 492,109.

This invention relates to improvements in sash pulleys.

It is the object of the invention to provide a novel sash pulley casing which may be driven to a lit Within a single opening in a window frame, and which includes integral means for anchoring itself within said opening independently of the use of screws or other fastening devices, thus cheapening the cost of manufacture of the pulley and greatly reducing the expense of positioning it within a window frame.

In the drawing:

Figure 1 is a view of the pulley in place Within a frame which appears in vertical cross section, a portion of the pulley casing being broken away to expose a sheave there-- within.

Figure 2 is a front elevation of the pulley assembly as it appears within the frame.

Figure 3 is a view taken in section in the plane indicated at 3 3 in Fig. 1.

Like parts are identified by the same reference characters throughout the several views.

The pulley casing 5 is in the form of a flattened tube having rounded sides and ends and comprising a pair of stamped shells 6 and 7 having complementary margins 8 continuous about the tcpV and ends of the pulley casing and across the intermediate portion of the bottom thereof, but cut away at 9 to provide openings through which the sash rope 10 may pass.

The shells 6 and 7 are joined by longitudinally spaced rivets 11, of which the heads are disposed in recesses 12 in the faces of the respective shells, so that they will not interfere with the movement of the shell into the opening provided therefor at 13 in the frame member 14. Within the pulley casing the rivets 11 provide shaft portions upon which the sheaves 15 are rotatable to carry the rope 10.

At the front ofthe pulley casing the opening at 9 is bounded by a shoulder 16, as shown in Figs. 1 and 2. In order that the device may present a linished appearance without the use of a mounting plate or bezel, it is desired that the shoulder 16 be flush with the front of frame member 14. To this end means is provided for limiting the movement of the pulley casing through the frame member 14, and this means preferably constitutes complementary ribs 18 formed in- 55 tegrally in the walls of the respective shells which comprise the pulley casing. It will be obvious that when the pulley casing is driven through a hole in the frame member 14 closely conforming in size to the casing, v0o

the engagement of the rib 13 with the frame member will act as a positive stop to prevent inward movement of the casing beyond the desired position.

In order to prevent the casing from outc5 ward displacement we provide at 2O prongs or points pressed outwardly from the faces of each of the shells 6 and 7. The shape of these prongs is broadly immaterial, but it is desirable that each should include a point projecting toward the front of the casing, as at 21. The natural resilience of the metal used `in forming the casing will tend to force the pointed portions of the prongs outwardly into the wood of the frame member 14 and, 75

although the prongs will not enter the wood material during the inward movement of the pulley casing, they will catch and resist any tendency of the casing to move outwardly,

so that after the casing is once in place it can 830 only be removed by the application of very substantial pressure.

It 1s not necessary that the frame member 14 be made of wood, since a metal frame member having an opening suitable for a pulley casing embodying this invention may also be made to be engaged by similar prongs.

When a pulley casing embodying this inventlon is fully seated within an apertured frame member, the engagement of its bead 18 90 with the frame member will tend to hold the casing against oscillation in one direction, l

aperture, a, pulley casing composed of complementary shells Jformed of sheet rnetalY and each comprising a. side, top, bottom and ends, the bottom being eut away at each end to provde sash ropeopenngs, and each shell having intermediate its ends and adjacent one of the openings ay rib portion formed by pressing the Walls of the casing outwardly.

FREDERCK J. PEASE. HARLOV H. PEASE. 

